#! /usr/bin/env python
# 
# Convert bib file to HTML
#
# TODO
#  take out tex fragments, backslash, braces etc
#  convert tex accents to HTML accents
#  do string substitution using templates
#  better handling of different reference types
#  probably needs more rigour in the HTML code
#  use CSS


# Copyright (c) 2007, Peter Corke
#
# All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * The name of the copyright holder may not be used to endorse or 
#	promote products derived from this software without specific prior 
#	written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
# THE POSSIBILITY OF SUCH DAMAGE.

import Bibliography;
import BibEntry;
import BibTeX;
import string;
import sys;
import time;
import optparse;

	
str = "";

def append(s):
	global str;

	str += s;

def append_nl(s):
	global str;

	str += s + '\n';

class HBibEntry(BibEntry.BibEntry):

	def __init__(self, be):
		self.fieldDict = be.fieldDict;

	def display(self):
		append( "<p>" );
		# put title
		if self.getURL():
			append( '<a href="%s"><i>"%s"</i></a>, ' % (self.getURL(), self.getTitle()) );
		else:
			append( '<i>"%s"</i>, ' % self.getTitle() );

		# put authors
		append( self.getAuthors() + '.  ' );
		month = self.getMonthName();
		year = self.getYear();

		# put more fields
		for k in ['Journal', 'Volume', 'Number', 'Booktitle', 
			'Address', 'Institution']:

			if k in self.fieldDict:
				append( self.fieldDict[k].strip('"') + ', ' );
		eds = self.getEditorsNames();
		if eds:
			append("eds. " + eds + ', ');
		if month:
			append( month );
			if year > 0:
				append( " " + `year` );
		else:
			if year > 0:
				append( ", " + `year` );
		append( " (%s)" % be.getKey() );
		append_nl( "</p>" );



## parse switches
p = optparse.OptionParser()
p.add_option('--highlight', dest='highlight', action='store', type='str',
             help='highlight the specified word in the output');
#p.add_option('--resolve', dest='resolve', action='store_true',
#             help='resolve cross reference entries');
p.set_defaults(highlight=None);
(opts, args) = p.parse_args()
globals().update(opts.__dict__)

if len(args) == 0 and sys.stdin.isatty():
	p.print_help();
	sys.exit(0);

## read the input files	
bib = BibTeX.BibTeX();
if args:
	for f in args:
		bib.parseFile(f);
else:
	bib.parseFile();
			
bib.resolveAbbrev();

## generate HTML
append_nl( "<html>" );
append_nl( "<head>" );
append_nl( "  <title>Bibliography %s</title>" % ( args[0] if args else '(stdin)',) );
append_nl( """  <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">""" );
append_nl( "</head>" );
append_nl( "<body>" );

for be in bib:
	hb = HBibEntry(be);
	hb.display();

if highlight:
	str = string.replace(str, highlight, """<font color="ff0000">%s</font>""" % highlight);

append_nl( "<hr>" );
append_nl( "<p>Generated by bib2html at %s.  bib2html by Peter Corke</p>" % time.asctime() );
append_nl( "</body>" );
append_nl( "</html>" );

print str;

